Road scraper



June 5, 1928. 1,672,497

c. J. MORITZ ROAD SCRAPER Filed March 31, 1925 2 Sheets-Sheet 1 ill" r 22 9 O O O Zaxf/Yorz? June 5, 1928. 1,672,497 S c. J. MORITZ ROAD SCRAPERFiled March 51, 1925 2 Sheets-Sheet 2 fizz/611E Q Cfiarispf/far PatentedI June 5, 1928.

UNITED STATES PATENT OFFICE.

CHARLES J. MORITZ, OI EFIINGHAM, ILLINOIS.

ROAD SCRAPER.

Application'flled March 81, 1925. Serial No. 19,631.

My invention relates to-road scrapers and has to do more particularlywith road shoulder trimming machines, an object being to provide animproved and simplified mac ine of this character having certainfeatures and advantages in construction and operation. Moreparticularly, my improved machine. is "constructed for use in trimming011' the dirt shoulders adjacent toor alongside the road, as alongsidethe concrete roadalong the line 2-2 of Fig. 1;

Fig. 3 is an enlarged view-of aportion of the machine showing moreparticularly the mold board, mounting and rotatable sup ort;

ig. 4 is a cross-section view along the line 4-4 of Fig. 1, showing morein detail the roller adapted to ride on the cement road so as to keepthe mold board cutting knife from scraping on the cement surface;

Fig. 5 is an enlarged view of the adjustable end section of the moldboard adapted for sloping oif the shoulder; and

Fig. 6 is an enlarged view of the clamping means for fastenin the moldboard carrying beam to the main rame of the body.

Referring now more in detail to the preferred form of my invention asshown herein, I rovide a suitable wheeled body adapte preferably to runon the finished road, usually the concrete section, and adapted to carrythe mold board at one side thereof. This body in its preferred formconsist of a suitable frame comprising side angle members 7-8 suitablybraced at 9-10 and carrying rear'wheels 1112 supported upon a suitableaxle 13, preferably rigidly attached to the frame. steerable whee'lsarealso preferably provided at the front end of the frame, and to this endI use wheels 14-15 pivotally attached to the front axle 16 at brackets17'-18 and having steering arms 19-20 rearwardly extending therefrom andconnected by a tie rod 21.

Any suitable steering mechamsm may be .is clam provided, but Ipreferably employ a chain 22 connected to the steering arms 1920 andpasslng over pulleys 23-24 and back over a drum 25' carried on the shaftof the steer-' ing wheel 26. The chain is held taut by a suitableinterposed spring 27, so as to .prevent slack in the chain wheninitially connected or when the steering wheel carrying beam 39 isadjusted in the frame. The steermg post carriesa notched wheel 28, inthe teeth of which a dog 29 rests-so as to hold the wheel in itsadjusted position.

N ow as to the shoulder trimming means, for this purpose I preferablyprovide 1 a suitable mold board in the form of a curved- ,steel member30 carrying a scraper or hit 31 adapted to be removed for sharpening orreplacement.

The mold board is preferably rotatably adjustable, and to this end Iprovide a central shaft and a circular supporting frame 32 of. angleiron curved downwardly at its ends 3334 and then forwardl to suitablysupport the mold board 30, w ich is attached to the face of one web ofthe angle. A

The mold board is also centrally rotatably supported, and to this end Iprovide the tubular shaft 35 fixedly held in the end of the bracketsections 37"-38, which bracket (1 to the end of the channel iron 39 by te bolts 38'. By removing the bolt 38 at the outer end of bracket 38, andremoving bolt 53 at the front end of the bar 46 and then swinging themold board longitudinally to the machine, the entire mold board, circleframe and bar 46 may be swung upwardly on the rear bolt 38' so as topermit moving the machine through narrow gateways, barn openings, etc,where it otherwise would not go through. Referring again to channel 39,this is longitudinally adjustably held upon the vehicle frame by theclamps as shown in Fig. 6. These clamps are secured to the side bars ofthe main frame and each includes a. block 40 held upon the web of theangle iron, a clamping block 41 extending down into the channel of thescraper supporting beam 39 and carried by a. cross bar 42, all-adaptedto be clamped together by bolts 43.

Thus to adjust the mold board supporting beam 39 on t e veh c e frame,the clamps are unloosened and the beam adjusted to its proper position,where it is held inplace by the clamps just described.

Referring again to the mold board supporting means, the shaft thereforextends downwardly through the bracket 37-38 the lower end of the shaftbeing loose in a bracket 44-fastened 'to .the rear face of the moldboard and then extending upwardly through the draw bar bracket 45carried at the rear end of the draw bar 46.

Thus the mold board is rotatably supported upon the shaft 35 through thebracket 44,

and is not only held in an adjusted position through the circular frame32, but the latter frame also takes the strain off of the shaft 35 whichwould otherwise be imposed thereon from the scraping operation of themold board as themachine is drawn along. Thus the draw bar 46 not onlytakes this straln, but also takes the direct pull u on the mold boardinstead of this strain being taken by the cross beam 39. The draw bar 46is p1vot-ally attached at its forward end 53 to the front cross bar 54of the main frame.

To hold the mold board in its angular adjustment I provide spaced holes55 in the circular frame 32, so that'the frame may be clamped to thedraw bar 46 by a bolt 56.

In using the present machine for tr1m ming the dirt shoulder adjacentthe road, as where such a dirt shoulder is required alongside a concreteroadway, the usual requirement is that this shoulder be trimmed oillevel with the surface of the roadway, and to this end I provide aroller 57 carried at the inner end of the mold board and adjusted so asto ride upon the road and just maintain the scraper 31 clear of thesurface. Thus the scraper is maintained at the proper level and also ket clear of the road so as to prevent wear of the scraper or scra ing ofthe roadway surface. This roller 5 is carried upon an arm 58, pivotallysupported by abracket 59 attached to the rear of the mold board, the arm58 thus permitting the roller 57 to, adjust itself according to theangle of the mold board. A set screw-6O is also provided for holding theroller arm is an adjusted position if desired. In connection with theroad shoulder being trimmed level with the surf-ace of the roadway, itis usually required that this shoulder be sloped off and kept at adefinite width, ordinarily six feet, and then sloping downwardly andoutwardly either toward the ditch or so as to form a ditch.

Therefore I have provided an adjustable end for the mold board in theform of a shoulder wing comprising an upper section 61 corresponding tothe mold board 30, and

a knife or cutting section 62 corresponding.

to the blade 31 carried by the main mold 'board. This shoulder wing isadjustably carried as an extension of the main mold board, so that itmay be used as a straight supported upon the main mold board by acasting 63 shaped to take the wing section 61which is clamped thereto bythe bolts 64,

a pivot bolt 65 passing through the main mold board 30, member 63 andshoulder wing 61 as indicated in Fig. 3. This support 63 has an upwardlyextending adjusting arm 66 by means of which the wing may be raised andlowered, as indicated by the full and dotted lines inFig. 5. Thisadjustment is preferably made from the drivers seat, and to this end Iconnect the adjusting arm 66 by a link 67 back to a double arm member47-48 fixedly attached to a hub 49 rotatably .supported upon the shaft35 and free to move independent thereof. These arms 47-48 are thenconnected by a chain 50, which passes over a drum carried at the lowerend of the shaft 51 which has the hand wheel 52 at the upper endthereof. The drum at the lower end of this shaft is similar to the drum25 used for the steering chain. This shaft 51 also carries a rack anddog to hold it in its adjusted position.

i It will be noted that the shoulder wing operating arm 47 has apeculiar shape. This is so arranged that the connection 68 for theoperating-link 67 will have the most direct pull upon the wing operatingarm 66 within the angle of adjustment of the wing arm and the angle ofadjustment of the mold board, the latter being shown in Fig. 1 in itsmost usual position of operation. At the same time the connecting ends fof the arms 47-48 are positioned so as to get the most direct pull uponthese arms from the chain 50, through theoordinary angle of adjustmentof these arms. That is the parts as shown in Fig. 1 are in theirordinary or most usual adjustment, and the arms 47-48 would ordinarilybe used or adjusted or moved forward or backward from the positionshown. .Similarly the connecting point 68 would have a like adjustmentback and forth from the position shown. I set this connecting point backof a line drawn between the axis of shaft 35 and connecting point, 47,so that a more equal adustment and direct pull is secured as the arm 66and shoulder wing are adjusted.

Anysuitable shaft or draw bar may be,

employed for attaching the machine to the tractor such as is ordinarilyemployed, and I have shown a draw bar comprising two members 7 0-71which meet at their forward end 72 and are attached at their rear endsTherefore the mold boar ing a vertical pivot shaft attached to thesuspending frame and to the mold board, a

dirt-to be moved, etc., and therefore I pro face of the finished road,amold board'sup porting frame extending laterally from the vehicle body,a roadshoulder trimming mold board adj ustably sus ended from saidframe,

the suspending means being attached to the said-suspending framelaterally of the vehicle-body and a drawbar transversely adjustablealongthe front end of the vehicle body to shift the center of pullsubstantially on the line of the wheels on the mold board side of thevehicle or outside'thereof so' as to shift the center of pull, accordingto the side drag on the machmewhen. in use.

2. in a road shoulder trimming machine of the characterdescribed,a'wheeled vehicle adapted to be drawn along on the surface of thefinished road, a mold, board support-- ing frame extending. laterallyfrom the ve-' hi'cle body, a roadshoulder trimming mold board adjustablsuspended from said frame,

suspending means compriscircular frame extending around vthe axis jtothe beam at various angular positions of,

of the shaft and attached to the mold board with a relatively stationarybeam, and clampmg means for securing the circular frame the mold boardfor rigidly holding the mold board against angular displacement duringshoulder.v slo ing wing adjustabl operation, said latter beam extendinglongitudinally with the vehicle body and-having an end. attached to thebody frame to brace themold board suspending frame.

3. In a road shoulder trimmingemaehine of the character described, awheeled vehicle adapted to be drawn along on the surface of the finishedroad, a ,mold board supporting frame extending laterally fromthe vehiclebody, a road shoulder trimming mold board adjustably suspended from saidframe, a carried at the outer end of the mold boar for sloping off theshoulder to a desired degree, a drivers support carried by the vehiclebody, means controlled from the drivers support for adjusting theshoulder sloping wing, said latter means comprising a vertical shaft andhand wheel adjacent the drivers seat, an arm rotatably supported uoon avertical axis by the mold board sunnorting frame, an arm operatinconnect-ion from said arm to the hand Wheel shaft,-an upwardly extendingarm attached to the shoulder sloping wing, said wing being mounted upona substantially horizontal axis, anda'connection from said wing arm tothe aforesaid arm,

whereby the operation of the hand wheel will rotate the first said armupon its vertical axis to adjust the shoulder sloping wing to desiredangles.

4. In a road shoulder trimming machine, a

vehicle body. comprising a substantially rectangular frame includinglongitudinal sides and road wheels at the front and rear ends of thebody, a transverse beam extending across the center of the body andprojecting laterally beyond the body frame and wheels. a front end beamfor said frame projecting laterally beyond the body and wheels forwardof the rojecting end of the central beam, a mold board positioned to oneside of the vehicle body and wheels and having a central connectionextending upwardly andsuspended from the end of the central beam outsidethe vehicle body and vheels and permitting angular adjustment of themold board, and a brace beam extending longitudinally outside of thebody frame laterally thereof from the front beam to the central or moldboard su porting beam.

5. Ina road shoulder trimming machine, a vehicle body comprising a'substantially vrectangular frame including longitudinal sides and roadwheels atthe front and rear ends of the body, a transversely adjustablebeam extending across the center of the body and projecting laterallybeyond the body frame and wheels, a front end beam for said frameprojecting late. ally beyond the body and wheels forward of theprojecting end of the central beam, a mold board positioned to one sideof the vehicle body and wheels and having a centralconnection extendingupwardly and suspended from the end of the central beam outside thevehicle body and wheels and permitting. angular adjustment of the moldboard, a; brace beam extending longitudinall outside the body framelaterally thereo from the front beam to the central or mold boardsupporting beam said central or mold board su porting beam beinglaterally adjustably held b v the vehicle frame and said longitudinalbrace beam being connected. to the front cross beam and the central beamso as to permit such lateral adjustment.

6. In a road shoulder trimming machine of the character described, asubstantially rectangular vehicle body frame having road wheels at thefront and rear .ends thereof, a mold board centrally pivotallysuspendedfrom a laterally projecting frame carried by the vehice body frame so asto position the mold board laterally of the body for trimmin the dirtshoulder adjacent the road whi ethe vehicle wheels run upon the finishedsurface of the road, a cross beam at the front end of the vehicle bodyand prm jecting laterally beyond the body frame and wheels, a brace beamextending from the .by the mold board, an operators support carried bythe mold board support, and means on the mold board support foradjusting the road shoulder sloping wing without interfering with theadjustment of the mold board support.

8. In a road grader, a wheeled frame, a mold board support arrangedbeyond one side thereof, a mold board carried thereby a road shoulderslo ing wing pivoted to the mold board, a lin board support to swingabout a vertical axis,

means for adjusting the link about its axis,

and an o erative connection between the link and roa shoulder slopingwing.

9. A road grader, inc uding a wheeled frame, a horizontal bar extendinglaterally from the forward end thereof, a mold board supporting bar alsoextending laterally from the frame, a draw bar connected with the moldboard supporting bar and laterally extending bar, and a mold boardcarried by the draw bar.

10. A road grader'comprising a wheeled frame, a mold board supportextending laterally therefrom and arranged for horizontal adjustment, adraw bar, a vertical shaft extending from the draw bar and pivotallyconnecting the latter to the mold board support to permit the draw barto be swung to variousangular positions, and a mold board axiallyadjustable on the shaft.

11. A foad grader comprising a. wheeled frame, a mold board supportextending latorally therefrom and arranged for horizonthe draw bar andtal adjustment, an angularly adjustable draw bar, a vertical shaftextending. from ivotally connecting the latter-to the mold oard supportto permit the draw bar to be swung to various angular positions, and amold board axially ad pivoted to the mold justable on the shaft, and aquadrant having 12. In a road grader, a wheeled frame, a

pair of parallel bars extending laterally rom the frame, a draw barhingedly connected with one ofthe bars and having its other enddetachably connected with the remaining bar, a mold board carriedthereby, the draw bar being arranged to be swung parallel to one of thebars and swung upwardly to an out of the way osition while the graderispassing throug a restricted passage. 1

13. In a road grader, a wheeled frame, a pair of parallel bars carriedby the frame and, extending at right angles to the latter and one ofwhich being adjustable transversely of the frame, a draw bar arrangedparallel to the frame and having its ends pivotally attached to theparallel bars, and a mold board carried by the draw bar.

14. The combination with a wheeled frame, of a mold board supported atone side thereof, a road shoulder sloping wing supported for angularadjustment on the mold board, a link pivotally supported to swing abouta vertical axis, an o erative connection between one end of the link andwing, and manually o erable actuating means on the frame an operativelyconnected with the link whereby to swing the latter about its axisv toadjust the wing.

15. The combination with a. wheeled frame, of a mold board supported atone side thereof, a road shoulder sloping wing supported for anguluaradjustment on the mold board, a link pivotally supported to swing abouta vertical axis, an operative connection between one end of the link andwing, 'ahand operated rotatable element on the frame, and flexibleelements connected with the'link and rotatable element whereby to swingthe link about its axis to adjust the road shoulder sloping wing.

In witness whereof, I hereuntosubscribe my name this seventh day ofMarch, 1925.

. CHARLES J. MORITZ.

